Circadian Programs in Cyanobacteria: Adaptiveness and Mechanism

Cyanobacteria exhibit enhanced fitness when their circadian period aligns with environmental cycles.

• Circadian regulation in cyanobacteria influences cellular activities and growth.
• The biological clock of cyanobacteria can track time even with rapid cell division.
• Three specific genes, kaiA, kaiB, and kaiC, have been linked to circadian traits.
• These genes are located close together on the chromosome, forming a clock gene cluster.
• The gene products are involved in an autoregulatory feedback loop, indicating complex interactions.

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